TY  - BOOK
AU  - Hayward,Chris
TI  - Gender differences at puberty
SN  - 9780511489716
U1  - 612.6 
PY  - 2009///
CY  - Cambridge
PB  - C.U.P.
KW  - Developmental psychology
KW  - Biological psychology
UR  - http://dx.doi.org/10.1017/CBO9780511489716
ER  -